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I Lost 20 Pounds in 4 Months And Here's What I Eat in a Day

Discover the four effortless changes this fitness coach made to shed pounds fast—and how you can, too.
FACT CHECKED BY Christopher Roback

Losing weight and achieving your weight loss goals may seem daunting. However, dropping a few dress sizes can be as simple as making a few changes to your routine. Weight loss coach Sydney St-Aubin, Founder and Program Director of the Bounce N' Burn Rebounding program, who goes by the TikTok handle @sydneystaubin, boasts over 126,000 followers on the video sharing site, where she shares tips and secrets about her weight loss. In a recent video, she revealed that she lost a whopping 20 pounds in less than four months simply by incorporating four easy changes into her lifestyle.

"If I had to lose 19 pounds in the next four months, again, here's what I would do, which, by the way, I do have to lose 19 pounds in the next four months again," she starts explaining in the viral TikTok video. She did it "by making four effortless changes in my life," she told us here at Body Network. "I did things one step at a time so that I wouldn't get too overwhelmed." Here's exactly what she did.

I Started with Nutrition, Not Exercise

"I lost almost 30 pounds so far. So here is part two of the things I would do again and wouldn't do if I were to start all over knowing what I know now. Building on my point in my last video, I would not work out five days a week. Right off the bat, I would kick things off focusing on nutrition because nutrition is like 90% of it," Sydney says in the video.

I Learned About Calorie Deficit

Calories counting , diet , food control and weight loss concept. Calorie counter application on smartphone screen at dining table with salad, fruit juice, bread and fresh vegetable. healthy eating
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"The only way to lose weight is to be in a calorie deficit, so I know that all of us are thinking that we have to eat fewer calories than what our Apple Watch is telling us we're burning, right? Well, the Apple Watch is only telling us our active calories burn, and we actually burn a lot of calories at rest," Sydney says.

I Calculated My BMR

"This means that the first thing I would suggest doing if you're starting a weight loss journey is looking up a BMR calculator online, putting in your height, weight, your statistics, and seeing how many calories that you burn at rest. So if you were to just sit in bed all day watching Netflix, with no exercise, nothing, how many calories are you burning by just living, breathing, and existing that information?" she says. You can benchmark your progress with this useful Lean Body Mass Calculator.

I Made Small, Sustainable Changes

"Making small, sustainable, healthy lifestyle changes will make a big contribution over time," Sydney says in another video.

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I Found Exercise I Enjoyed

"The only way to lose weight for you is to find a movement that you enjoy no matter what it is, because the only way to lose weight is when you're consistent in doing something. So when you find something you love, you're going to be consistent, and that's when you're going to find the results that you've been looking for," she says.

I Focused on Sustainable Habits

"If you're not enjoying the process, then how are you supposed to keep the weight off at the end of it? Think about that. If you want something to be sustainable, you have to enjoy it. You can't do all these crazy diets that you're just going to give up once you reach your goal. You need to find healthy habits that are sustainable long-term, and make healthy lifestyle changes so that you can be the best version of who you are," Sydney says.

Here's What I Eat in a Day: My Breakfast

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"I'm starting the day off with two hard boiled eggs cut in half, then some Turkey bacon and a little baby bell. I'm all about just not complicating it. This was super easy. I prepped the eggs in advance and threw some Turkey bacon in the air fryer. Iced coffee isn't ready to roll," she adds.

My Lunch

Close up of women with measuring scoop of whey protein and shaker bottle, preparing protein shake.
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"It's time for lunch. Today I'm having ice cream that I prepped and I have to let defrost for a little bit, but what I did was I put a Fairlife vanilla protein shake with six grams of fat-free jello, and I'm going to use Cinnamon Toast Crunch as a topping," Sydney says.

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My Dinner

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"Alright, it's dinner time. I'm at 8,300 steps, and I'm on my fourth liter of water. I'm going to have the same dinner as yesterday because reminder, I don't like to overcomplicate things for this. I'm just going to be mindful about the Taki and the hummus and measure the amount of chicken so I can see about my protein. But everything else is pretty much vegetables, and I'll punch in my pita," she says.

My Tips for Better Sleep

"A fun tip that I like to share is that if you're having trouble sleeping, have your heaviest carb meal for lunch instead of for dinner because heavier carbs interrupt your sleep if you have them too close to bedtime," Sydney says.

I Keep Track of My Steps and Water Intake

Trail runner athlete using her smart watch app to monitor fitness progress or heart rate during run cardio workout. Woman training outdoors on mountain rocks. Closeup of tech gear.
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"Okay, I'm having 112 grams of chicken. Alright, now we start building it. So I'm starting with the pita. This is what I mentioned. I'm not too worried about, I'm going to punch in a tablespoon of hummus, but I'm actually having probably a little bit less than that and Taki good. Now we got our all the leftover veggies from yesterday, so we got some cucumbers, good onions and tomatoes, finishing it off with some feta cheese," she says.

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Here Is What She Would Do Next Time

Sydney shares more insights on her weight loss journey: "If I had to lose 19 pounds in the next four months, again, here's what I would do, which by the way, I do have to lose 19 pounds in the next four months again," Sydney says.

I Drink Plenty of Water

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"That's what your body needs. One and a half of these at the minimum, okay? If you're exercising, drink two at the minimum," Sydney says, referring to her water bottle.

I Focus on Protein

Roasted or seared chicken breast sliced on a cutting board with herbs and spices
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"No counting, no weighing, no measuring. I'm learning that right now. You don't even need to do that. But something that's helped me so, so much in the past four months is just making every single meal protein oriented, just focus on protein," Sydney adds.

I Increase My Steps

"Try to get a little bit better," Sydney says, encouraging viewers to increase their daily step count.

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I Keep It Simple

"You don't got to overcomplicate the whole thing. You don't need to feel like you're on this insane diet. You don't need to cut out your favorite foods. Eat everything in moderation. Let me help you because I've finally figured it out. Let's do it," Sydney says at the end of the video. And if you enjoyed this article, don't miss I Hit 60 and These 15 Anti-Aging Foods Keep Me Fit and Feeling 20 Years Younger.

Alek Korab
Alek Korab is Founding Editor of Body Network Read more